Sunset on Mount Jefferson, Oregon from 30,000 feet.|
Mount Jefferson is a stratovolcano in the Cascade Volcanic Arc, the Cascade Range and is the second-highest mountain in Oregon. Situated in the far northeastern corner of Linn County about 60 miles (97 km) east of Corvallis, Jefferson is in a rugged wilderness and is thus one of the hardest volcanoes to reach in the Cascades though USFS road 1044 does come within 4 miles (6.4 km) of the summit.
Mount Jefferson was named in honor of US President Thomas Jefferson by the Lewis and Clark Expedition. This was the only High Cascade mountain they named. The expedition, which was sponsored by President Jefferson, first saw the peak from the mouth of the Willamette River in March 1806.